National Institute of Metrology, Quality and Technology – Inmetro issued Public Consultation No 9, March 5, 2025, that proposes to change the requirements of the Conformity Identification Seal for Cylinders for Vehicular Natural Gas (GNV) established by Inmetro Ordinance No. 436, October 19, 2021. Comments must be presented on the Participa + Brasil Platform at: https://www.gov.br/participamaisbrasil/inmetro-diretoria-de-avaliacao-da-conformidade